90 Nebraska Agricultural Exp. Station , Research Bui. 20 
Table 35. — Summary showing immediate effect of foreign pollen 
upon kernel weight of dent com. 1921, 1 
No. 
of 
ears 
av. 
Female parent 
Male parent 
Ratio 
weight of 
hybrid 
kernels 
to pure 
Per cent 
EARS BORNE ON INBRED PURE LINE PLANTS 
10 
Inbred Nebraska White Prize 
Inbred Hogue’s Yellow Dent. . .1 
110.87 
5 
Inbred Hogue’s Yellow Dent. 
Inbred Nebraska White Prize . . 
116.15 
10 Inbred Nebraska White Prize 
Ordinary Hogue’s Yellow Dent 
110.65 
5 1 
I 
Inbred Hogue’s Yellow Dent. 
Ordinary Nebraska White Prize 
106.97 
30 | 
Average 
111.16 
EARS BORNE ON PLANTS OF ORDINARY VARIETIES 
12 ! 
Nebraska White Prize 
Hogue’s Yellow Dent 
99.90 
12 
Hogue’s Yellow Dent 
Nebraska White Prize 
101.09 
3 
Martens’ White Dent 
Minnesota No. 13 
101.27 
3 
Minnesota No. 13 ... . 
Martens’ White Dent 
99.68 
3 
Boone County White 
Reid’s Yellow Dent . 
98.41 
3 
Reid’s Yellow Dent 
Commercial White 
100.48 
3 
[Hogue’s Yellow Dent 
Commercial White 
100.75 
39 
Average 
| 100.22 
8 
Nebraska White Prize 
Inbred Hogue’s Yellow Dent 
: 
100.64 
4 
Hogue’s Yellow Dent 
Inbred Nebraska White Prize . 
99.27 
12 
Average 
99.95 
*Data compiled from Tables 33 and 34. 
Pollen from an unrelated homozygous plant has as much 
influence upon kernel size as pollen from a heterozygous plant. 
Varieties or strains which have undergone very close selec- 
tion for type or have by some other means been somewhat re- 
stricted in the number of Mendelian factors represented in their 
hereditary constitution might reasonably be expected to respond 
in a slight degree to foreign pollen. 
With broad, wind fertilized varieties, the slight average in- 
crease of 0.22 per cent in kernel weight due to foreign pollen 
can doubtless be accounted for in part by the fact that abso- 
lutely none of the hybrid kernels were selfed; while, as has 
been shown earlier, a small portion, approximately 0.7 per cent, 
of the kernels in a field were selfed in ordinary wind fertiliza- 
tion. 
